(IGNORE) Add info on PR title prefixes (IGNORE), (MINOR), and (MAJOR) to contribution guidelines.

[crandmck]

Changes in this pull request

Adds info on PR title prefixes (IGNORE), (MINOR), and (MAJOR). This came up in discussion earlier this week.

Checklist

• This PR represents a single feature, fix, or change.
• All applicable changes have been documented.
• Any TO DO items (or similar) have been entered as GitHub issues and the link to that issue has been included in a comment.

[codecov-commenter]

Codecov Report

Merging #91 (9efefac) into main (0c4b3c0) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #91   +/-   ##
=======================================
  Coverage   74.15%   74.15%           
=======================================
  Files          66       66           
  Lines       13811    13811           
=======================================
  Hits        10242    10242           
  Misses       3569     3569           

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[crandmck]

@scouten-adobe This is fairly trivial, could we land it ...?